table {
    width: 50%;
    border-collapse: collapse;
    margin: 0 auto;
}
th{
    border: 1px solid #999;
    text-align: center;
    padding: 20px 0;
    background-color: #ccc;
}
td {
    height: 50px;
    border: 1px solid black;
    text-align: center;
    vertical-align: center;
}
